In principle, the neighbor is every person in the world. But that is too much for us,because we do not yet know how to treat our enemies and opponents correctly.All of this has to be learned,and the Torah is the teacher. To begin with the neighbor is my friend, a person who wants to unite with me to attain a goal of friendship. We might think badly of our friends and look at them critically, but a beginning is if we try to create the right connection among us and overlook what we think are shortcomings."Do unto others as you would have them do unto you" means: we dont want to act against others in any of our thoughts, desires, aspirations, or intentions, by that we already extend threads toward each other.